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From: Dave Froble <davef@tsoft-inc.com>
Newsgroups: comp.os.vms
Subject: Re: basic BASIC question
Date: Fri, 31 Jan 2025 19:38:04 -0500
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On 1/31/2025 11:53 AM, Arne Vajhøj wrote:
> On 1/31/2025 11:39 AM, Dave Froble wrote:
>> On 1/31/2025 10:18 AM, Arne Vajhøj wrote:
>>> Is it common to use:
>>>
>>> declare integer constant TRUE = -1
>>> declare integer constant FALSE = 0
>>>
>>>
>>> ?
>>
>> It works.  Doesn't really matter if declared a constant.  Zero is false,
>> anything else is true.  Using 1 vs -1 has been more my experience.
>
> I got the impression that the manual/compiler prefer -1 over 1.

Manuals usually have a preference, but, can be incomplete.

> print not 0%
>
> does print -1.

That is an operation to flip the bits.  The opposite of 0000000000000000 is 
1111111111111111 ...


-- 
David Froble                       Tel: 724-529-0450
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